![]() | Clinical UM Guideline |
| Subject: External Insulin Pumps | |
| Guideline #: CG-DME-51 | Publish Date: 04/15/2026 |
| Status: Reviewed | Last Review Date: 02/19/2026 |
| Description |
This document addresses the use of external insulin pumps, which provide subcutaneous insulin infusion for the treatment of diabetes mellitus.
Note: Some external insulin pump devices come equipped with the capacity to be combined with continuous interstitial glucose monitor (CGM) devices to create automated insulin delivery systems. Devices with such features may be used as stand-alone insulin pumps or as combined systems, depending upon an individual’s need. This document addresses use of insulin pumps alone (continuous glucose monitor not requested or in use).
Note: For additional information regarding diabetes care, please see:
Note: For a high-level overview of this document, please see “Summary for Members and Families” below.
| Clinical Indications |
Medically Necessary:
External insulin pumps (either disposable or durable) are considered medically necessary when the following criteria are met:
Refills for medically necessary disposable external insulin pumps are considered medically necessary.
Continued use of an external insulin pump (including for individuals who used a continuous insulin infusion pump prior to enrollment with this plan) is considered medically necessary when the device has resulted in clinical benefit (for example, improved or stabilized HbA1c control or fewer episodes of symptomatic hypoglycemia or hyperglycemia).
Replacement pumps:
The replacement of external insulin pumps is considered medically necessary when the following criteria have been met:
Note: The medical necessity of the replacement of an external insulin pump for pediatric individuals (under 18 years of age) who require a larger insulin reservoir will be considered on a case-by-case basis. The following information is required when submitting requests:
Not Medically Necessary:
The use of an external insulin pump is considered not medically necessary when the criteria above have not been met.
Continued use of an external insulin pump is considered not medically necessary when continued use criteria above have not been met.
Replacement of currently functional and warranted external insulin pumps is considered not medically necessary when the criteria above have not been met, including when the request is to upgrade to a newer pump with additional features.
| Summary for Members and Families |
This document describes clinical studies and expert recommendations, and explains whether external insulin pumps are appropriate. The following summary does not replace the medical necessity criteria or other information in this document. The summary may not contain all of the relevant criteria or information. This summary is not medical advice. Please check with your healthcare provider for any advice about your health.
Key Information
An external insulin pump is a small, wearable device that delivers insulin through a tiny tube placed under the skin. It helps people with diabetes manage their blood sugar by providing a steady dose of insulin throughout the day and extra doses as needed during meals. This option may be used when multiple daily insulin shots are not enough to keep blood sugar levels under control. These pumps can be either disposable or reusable and may benefit children and adults with either type 1 or type 2 diabetes. Some people use pumps without a connected glucose monitor. The goal of the pump is to help people keep their blood sugar within a healthy range, avoid long-term problems, and improve quality of life.
What the Studies Show
Studies show that using an insulin pump can help lower average blood sugar levels and reduce blood sugar swings for people with type 1 or type 2 diabetes who are not well controlled on insulin shots alone. For people with type 1 diabetes, insulin pumps have been linked to fewer low blood sugar events and better overnight control. In people with type 2 diabetes, some studies have found that those using a pump had better blood sugar control than those taking shots, especially when shots were no longer working well. Some studies looked at a disposable insulin pump called V-Go. These studies show V-Go may work as well as traditional battery-powered pumps. However, most of this research was short-term or not as strong. Pumps are generally safe and do not require a backup pump. If a pump fails, users can switch to insulin shots until a replacement arrives.
When is an External Insulin Pump Clinically Appropriate?
An external insulin pump (disposable or durable) may be appropriate in these situations:
Refills for disposable pumps may be appropriate if the above are met. Continued use may also be appropriate if the pump helps with blood sugar control or reduces low or high blood sugar episodes.
Pump replacement for children who need more insulin than the current pump can hold may be considered on a case-by-case basis.
When is this not Clinically Appropriate?
Using an insulin pump is not clinically appropriate if the conditions listed above are not met. This includes requests for new pumps when the current pump is still working, is under warranty, or the person does not meet the criteria. Insulin pumps are not appropriate in situations where they have not been shown to help people improve their blood sugar levels.
| Coding |
The following codes for treatments and procedures applicable to this guideline are included below for informational purposes. Inclusion or exclusion of a procedure, diagnosis or device code(s) does not constitute or imply member coverage or provider reimbursement policy. Please refer to the member's contract benefits in effect at the time of service to determine coverage or non-coverage of these services as it applies to an individual member.
When services may be Medically Necessary when criteria are met:
For the following codes or when the code describes an external insulin pump:
| HCPCS |
|
| A9274 |
External ambulatory insulin delivery system, disposable, each, includes all supplies and accessories |
| E0784 |
External ambulatory infusion pump, insulin [when specified as a stand-alone insulin pump] |
|
|
|
| ICD-10 Diagnosis |
|
| E08.00-E13.9 |
Diabetes mellitus |
| O24.011-O24.93 |
Diabetes mellitus in pregnancy, childbirth and the puerperium |
| P70.2 |
Neonatal diabetes mellitus |
When services are Not Medically Necessary:
For the procedure codes listed above when criteria are not met or for all other diagnoses not listed; or when the code describes a procedure, device or situation designated in the Clinical Indications section as not medically necessary.
| Discussion/General Information |
Summary
Diabetes is a prevalent chronic disease in the U.S., affecting around 37 million people and ranking as the fourth leading cause of death. It impairs the body’s ability to regulate blood glucose due to inadequate insulin production, impaired insulin action, or both. Type 1 diabetes (T1DM) is often diagnosed early in life and requires insulin therapy as the pancreas produces little to no insulin. Type 2 diabetes (T2DM) is more common in adults but increasingly seen in youth and results from insufficient insulin or insulin resistance. Intensive management, including multiple daily injections (MDI) or insulin pumps, is essential for optimal blood glucose control, with pumps often offering better nocturnal control and fewer hypoglycemic episodes. Recent studies support the efficacy of wearable insulin pumps like the V-Go, particularly by individuals not achieving control with MDI. Guidelines from major medical societies, including the American Diabetes Association (ADA), the American Association of Clinical Endocrinology (AACE), the American College of Endocrinology (ACE) and Endocrine Society, recommend individualized treatment plans incorporating technology like continuous glucose monitoring (CGM) and insulin pumps to improve outcomes and quality of life. FDA-approved devices are available for a range of individual needs, though individualized education and training remain critical to effective use.
Discussion
Diabetes is one of the most common chronic diseases in the United States (U.S.), with approximately 37 million Americans with diagnosed disease. It is the fourth leading cause of death in the U.S. (ADA, 2026).
Individuals with diabetes mellitus have impaired metabolism of carbohydrates, proteins, and fats due to abnormal production or utilization of insulin, a hormone secreted by the pancreas that controls blood sugar. When poorly controlled, diabetes leads to cardiovascular disease, retinal damage that could lead to blindness, peripheral nerve damage, and kidney damage.
There are several types of diabetes. T1DM can occur at any age but is most commonly diagnosed from infancy to late 30s. In T1DM, the body’s immune system destroys the insulin-producing cells in the pancreas and the pancreas produces little to no insulin. T2DM typically develops after age 40, but has recently begun to appear with more frequency in children. Individuals with T2DM still produce insulin, but the body does not produce enough or is not able to use it effectively.
T1DM diabetes is treated with insulin that may be delivered in several ways. The most common method is multiple daily injections (MDI) via a syringe and subcutaneous injection. For some individuals with diabetes, the use of MDI therapy is insufficient to provide adequate control of blood sugar levels. In such cases, an external insulin pump may be recommended. These devices are worn externally and are attached to a temporary subcutaneous insulin catheter placed into the skin. The pump can be set to administer the insulin at a set (basal) rate or provide additional injections (boluses) as needed. The pump typically has a syringe reservoir with a 2- to 3-day insulin capacity. The purpose of the insulin pump is to provide an accurate, continuous, controlled delivery of insulin which can be regulated by the user to achieve glucose control.
Since the publication of the Diabetes Control and Complication Trial (1993), there has been a growing body of evidence to suggest that improved blood glucose control in diabetics leads to improved clinical outcomes, especially with regard to long-term diabetic complications. This has led to an approach of intensive diabetic management to maintain blood glucose to as near normal as possible over all hours of the day and over the life span of the individual. Implementation of this approach requires the individual to be capable of, and committed to, a complex daily medical program. It requires ongoing compliance with multiple daily glucose measurements and insulin injections accompanied by appropriate adjustments in insulin dose. Additionally, successful intensive diabetic management requires response to a variety of external factors including changes in diet, exercise and the presence of infection. Despite this complexity, many motivated individuals can, with adequate training and support, achieve significant improvements in glucose control. Both MDI and continuous subcutaneous insulin infusion via an external pump are effective means of providing intensive diabetic management (DCCT Research Group, 1993). Controlled trials comparing these insulin delivery methods show that in most individuals overall blood glucose control is the same or slightly improved with insulin pump treatment. However, in diabetics treated with insulin pumps, hypoglycemia is less frequent and nocturnal glucose control is improved.
The evidence supports the efficacy of the external insulin infusion pump for properly trained diabetics who are not well controlled on intensive, multi-dose insulin therapy. Benefits are seen in long-term control as shown by lowered HbA1c levels. In addition, stability of SMBG values as well as surveyed functional status and quality of life outcomes have been shown to improve in individuals using continuous insulin pump therapy (Hirsch, 1990; Kitzmiller, 1991; Pickup, 2002; Selam, 1990; Grunberger, 2014).
The benefit of insulin pump use for individuals with T2DM diabetes was established by the results of the OpT2mise Study (Aronson, 2016; Conget, 2016; Reznik, 2014). This well designed and conducted randomized controlled trial (RCT) concluded that for individuals with poorly controlled T2DM diabetes despite MDI, use of an insulin pump can be a valuable treatment option.
While standard insulin pumps operate on electricity, mechanical disposable insulin pumps (for example, the V-Go) have been proposed as an alternative. The existing evidence addressing this device is mainly in the form of short-term, retrospective studies (Boonin, 2017; Johns, 2014; Lajara, 2016a and 2016b; Meade, 2021; Rosenfeld, 2012; Sutton, 2016; Winter, 2015). A comparative trial reported by Lajara (2015) involved 204 participants using either the V-Go device or MDI. As with the above-described study, significant improvements in HbA1c concentration and decreases in required insulin volume were reported (-1.58% at 27 weeks and, p<0.001 for both).
Raval and colleagues (2019) reported the results of a retrospective cohort study involving data derived from the HealthCore Integrated Research Database. The study looked at 118 matched pairs of individuals with T2DM diabetes undergoing treatment with either the V-Go wearable insulin pump or MDI. At the end of 12 months, both cohorts were reported to have improvements in percent HbA1c ≤ 9%, but no significant between group differences were noted (p<0.001 for V-Go group and p=0.046 for the MDI group; p=0.263 between groups). Insulin prescription fills were reported to be lower in the V-Go group (mean change: -0.8 vs. +1.8 fills, p<0.001). A decrease in insulin total daily dose during the last 6 months of follow-up was also reported in the V-Go group (mean change in insulin units per day: -29.2 vs. +5.8, p<0.001).
Grunberger (2020) reported the results of a prospective, open label, multi-institution case series study evaluating the V-Go disposable insulin delivery device in adults with type 2 diabetes and suboptimal glycemic control (HbA1c ≥ 7%). A total of 188 individuals were enrolled; 140 (74%) had at least one post-baseline HbA1c measurement and were included in the primary efficacy analysis. At 12 months, 112 participants (60%) remained in the study, with 66 still on V-Go device. The authors reported a mean 0.64% decrease in HbA1c from baseline of; (p=0.003) and total daily dose of insulin of 12 units/day (p<0.0001). Discontinuations were common and were frequently attributed to cost and adverse effects. Given the observational design, absence of a randomized control group, lack of blinding, sponsor funding, and substantial attrition, the findings are subject to potential biases and should be interpreted with caution.
At this time, the available data addressing the V-Go device demonstrates equivalent outcomes to standard battery-operated insulin pump devices.
Back-up Insulin Infusion Pumps
Modern external infusion pumps appear safe and reliable, and studies reviewed did not indicate a need for a “back-up” pump. If an insulin pump fails, an individual can and should revert to daily multiple injections until the pump is repaired or replaced.
Insulin Infusion Pump Reservoir Issues
Some children with diabetes experience high insulin requirements that exceed the capabilities of the insulin reservoir of their current external insulin pump. In such cases, it may be reasonable to replace their existing pump with a model that has a reservoir that meets their insulin requirements. Requests for this type of equipment upgrade would be reviewed individually, taking into account the unique needs of the individual and capacity of existing equipment.
Major Specialty Medical Society Recommendations
The ADA Standards of Medical Care in Diabetes-2026 has recommendations regarding the use of continuous glucose monitoring. These recommendations state:
6.3a An A1C goal of <7% (<53 mmol/mol) is appropriate for many nonpregnant adults without severe hypoglycemia of frequent hypoglycemia affecting health or quality of life A
6.4 Lower A1C goals (e.g., <6.5% [48 mmol/mol]) may be appropriate for individuals with diabetes with good health and function and low treatment risks (e.g., hypoglycemia) and burdens (see Fig. 6.1). B
6.5 Less stringent glycemic goals may be appropriate for individuals with significant cognitive and/or functional limitations, frailty, or severe comorbidities or where the harms of treatment, including hypoglycemia, are greater than the benefits. B
7.1 Diabetes devices should be offered to people with diabetes. A
7.2 The type(s) and selection of devices should be individualized based on a person’s specific needs, circumstances, preferences, and skill level. In the setting of an individual whose diabetes is partially or wholly managed by someone else (e.g., a young child or a person with cognitive impairment or dexterity, psychosocial issues, and/or physical limitations), the caregiver’s skills and preferences are integral to the decision-making process. E
7.6 People with diabetes who have been using CGM, continuous subcutaneous insulin infusion (CSII), and/or automated insulin delivery (AID) for diabetes management should have continued access across third-party payers, regardless of age or A1C levels. E7
7.8 Consider early initiation, including at diagnosis, of CGM, CSII and AID depending on a person’s or caregiver’s needs and preferences. C
14.18 Offer open-loop insulin pump therapy for type 1 diabetes management to children and adolescents on multiple daily injections who are capable of using the device safely (either by themselves or with caregivers) if unable to use AID systems. Choice of device should be made based on the individual’s and family’s circumstances, desires, and needs. A
14.21 Less stringent A1C goals (such as <7.5% [<58 mmol/mol]) may be appropriate for children and adolescents with diabetes who cannot articulate symptoms of hypoglycemia; have hypoglycemia unawareness; cannot access advanced insulin delivery technology and/or CGM; cannot check blood glucose regularly; or have nonglycemic factors that increase A1C. B
14.22 Even less stringent A1C goals may be appropriate for children and adolescents with a history of severe hypoglycemia, limited life expectancy or where the harms of treatment are greater than the benefits. B
14.23 Health care professionals may reasonably suggest more stringent A1C goals (such as <6.5% [<48 mmol/mol]) for selected children and adolescents if they can be achieved without significant hypoglycemia, excessive weight gain, negative impacts on well-being, or undue burden of care or in those who have nonglycemic factors that decrease A1C (e.g., lower erythrocyte life span). Lower goals may also be appropriate during the honeymoon phase. B
14.32 Consider setting an A1C goal of <6.5 (<48 mmol/mol) for most children and adolescents with type 2 diabetes who have a low risk of hypoglycemia. For those at higher risk of hypoglycemia, A1C goals should be individualized as clinically appropriate. C
15.9 Due to increased red blood cell turnover, A1C is slightly lower during pregnancy in people with and without diabetes. Ideally, the A1C goal in pregnancy is <6% (<42 mmol/mol) if this can be achieved without significant hypoglycemia, but the goal may be relaxed to <7% (<53 mmol/mol) if necessary to prevent hypoglycemia. B
The AACE and ACE published a position statement on the integration of insulin pumps and continuous glucose monitoring in patients with diabetes mellitus (Grunberger, 2018). This document states the following:
R2.7.1 The use of an insulin pump without CGM could be used to manage persons with diabetes who are achieving glycemic targets with minimal TBR, who report infrequent episodes of symptomatic hypoglycemia, and who are using SMBG on a regular basis (at least 4 times per day for persons with T1D). Grade B; Intermediate-High Strength of Evidence; BEL
R3.5.1 Clinicians should strongly consider the discontinuation of insulin pump therapy based on an individual’s ability to use it effectively and safely or based on the personal preference of a person with diabetes to discontinue this insulin delivery modality. Grade A; Intermediate Strength of Evidence; BEL 1
Additionally, in 2023 the Endocrine Society published Management of individuals with diabetes at high risk for hypoglycemia (McCall, 2023). In this document they make the following recommendations:
Recommendation 2: We suggest using real-time continuous glucose monitoring (CGM) and algorithm-driven insulin pumps (ADIPs) rather than multiple daily injections (MDIs) with self-monitoring of blood glucose (SMBG) three or more times daily for adults and children with type 1 diabetes (T1D). (2⊕⊕OO)
FDA Authorized/Approved Devices*
| Device Name |
Vendor |
FDA Links |
| Amigo Insulin Pump |
Nipro Diabetes System |
|
| MiniMed 630G System |
Medtronic
|
|
| Medtronic MiniMed 670G |
Medtronic |
|
| MiniMed 770G |
Medtronic |
https://www.accessdata.fda.gov/cdrh_docs/pdf16/P160017S076A.pdf |
| MiniMed 780G |
Medtronic |
https://www.accessdata.fda.gov/cdrh_docs/pdf16/P160017S091A.pdf |
| OmniPod 5 |
Insulet Corp |
https://www.accessdata.fda.gov/cdrh_docs/reviews/K203768.pdf |
| OmniPod Dash |
Insulet Corp |
https://www.accessdata.fda.gov/cdrh_docs/reviews/K191679.pdf |
| Tandem t:slim X2 |
Tandem Diabetes Care |
|
| V-Go |
Zealand Pharma |
* This may not be an all-inclusive-list. Additional CGM devices may be FDA approved and available in the US.
| Definitions |
External insulin infusion pumps: A device that is worn externally and attached to a temporary subcutaneous insulin catheter. An integrated computer controls a pump mechanism that administers insulin at a set rate or provide bolus injections as needed.
Glycemic: Having to do with blood sugar (glucose) levels.
Glycemic control: The ability of an individual’s body to control blood glucose concentrations within a specific physiologic range, either on its own or with the assistance of medical therapy.
Glycosylated hemoglobin (HbA1c) test: A laboratory test that provides the percentage of a specific type of modified hemoglobin in the blood. This test ascertains the level of diabetic blood glucose control over the past 3 to 4 months.
Interstitial glucose: Glucose present in the fluid present in spaces between the tissue cells of the body.
Self-monitoring of blood glucose (SMBG): A method of glucose monitoring in which an individual obtains capillary blood samples, typically by fingerstick, and measures glucose levels using a portable blood glucose meter and test strips. SMBG provides point-in-time glucose values and is performed at intervals determined by the individual’s treatment regimen and clinical needs.
Time in range (TIR): The percentage of time that glucose values fall within a specified target range over a defined monitoring period, as measured by continuous glucose monitoring (CGM). In most adult populations with diabetes, the standard target range is 70-180 mg/dL, unless otherwise specified. TIR is used as a measure of overall glycemic control and variability. 7
Type 1 diabetes (T1DM): A condition characterized by the impaired or inability of the pancreas to produce insulin. Sometimes known as ‘juvenile diabetes.’
Type 2 diabetes (T2DM): A condition characterized by a person’s body losing the ability to use insulin properly, a problem referred to as insulin resistance.
| References |
Peer Reviewed Publications:
Government Agency, Medical Society, and Other Authoritative Publications:
| Websites for Additional Information |
| Index |
Insulin pump
The use of specific product names is illustrative only. It is not intended to be a recommendation of one product over another, and is not intended to represent a complete listing of all products available.
| History |
| Status |
Date |
Action |
| Reviewed |
02/19/2026 |
Medical Policy & Technology Assessment Committee (MPTAC) review. Added “Summary for Members and Families” section. Revised Description, Discussion/General Information, Definitions, References, and Websites sections. |
| Reviewed |
02/20/2025 |
MPTAC review. Revised Description, Discussion, References, and Websites sections. |
|
|
04/30/2024 |
Revised Description section note regarding insulin pump capacity to be combined with CGMs. |
| Reviewed |
02/15/2024 |
MPTAC review. Revised Discussion and References sections. |
| New |
11/09/2023 |
MPTAC review. Initial document development. Moved content related to external insulin pumps from CG-DME-42 Continuous Glucose Monitoring Devices and External Insulin Infusion Pumps. |
Federal and State law, as well as contract language including definitions and specific coverage provisions/exclusions, and Medical Policy take precedence over Clinical UM Guidelines and must be considered first in determining eligibility for coverage. The member's contract benefits in effect on the date that services are rendered must be used. Clinical UM Guidelines, which address medical efficacy, should be considered before utilizing medical opinion in adjudication. Medical technology is constantly evolving, and we reserve the right to review and update Clinical UM Guidelines periodically. Clinical UM guidelines are used when the plan performs utilization review for the subject. Due to variances in utilization patterns, each plan may choose whether or not to adopt a particular Clinical UM Guideline. To determine if review is required for this Clinical UM Guideline, please contact the customer service number on the back of the member's card.
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